An account of the trigonometrical operation, wherby the distance between the meridians of the observatories of Greenwich and Paris has been determined / By William Roy.

  • William Roy
Date:
[1790]
Catalogue details

Licence: Public Domain Mark

Credit: An account of the trigonometrical operation, wherby the distance between the meridians of the observatories of Greenwich and Paris has been determined / By William Roy. Source: Wellcome Collection.

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    * f